<?xml version="1.0" encoding="UTF-8"?>
<!-- (c) XBRL International.  See www.xbrl.org/legal  
 
This version is non-normative - it should be identical to the normative
version that is contained in Appendix A of the specification RECOMMENDATION
with errata corrections to 2005-11-07 except for this comment.

Note that the normative version with errata corrections to 2005-11-07 is identical 
to the normative version with errata corrections to 2003-04-29.

Following the schema maintenance policy of XBRL International, this version's 
location on the web will be as follows:

1) While it is the most current RECOMMENDED version of the schema and until it is 
superseded by any additional errata corrections it will reside on the web at

http://www.xbrl.org/2003/xlink-2003-12-31.xsd 

2) It will be archived in perpetuity at 

http://www.xbrl.org/2003/2005-11-07/xlink-2003-12-31.xsd

-->
<schema targetNamespace="http://www.w3.org/1999/xlink" 
  xmlns:xlink="http://www.w3.org/1999/xlink" 
  xmlns="http://www.w3.org/2001/XMLSchema" 
  elementFormDefault="qualified"
  attributeFormDefault="qualified">
  
  <annotation>
    <documentation>
    XLink attribute specification
    </documentation>
  </annotation>
  
  <simpleType name="nonEmptyURI">
    <annotation>
      <documentation>
      A URI type with a minimum length of 1 character.
      Used on role and arcrole and href elements.
      </documentation>
    </annotation>
    <restriction base="anyURI">
      <minLength value="1"/>
    </restriction>
  </simpleType>
  
  <simpleType name="typeEnum">
    <annotation>
      <documentation>
    Enumeration of values for the type attribute
    </documentation>
    </annotation>
    <restriction base="string">
      <enumeration value="simple"/>
      <enumeration value="extended"/>
      <enumeration value="locator"/>
      <enumeration value="arc"/>
      <enumeration value="resource"/>
      <enumeration value="title"/>
    </restriction>
  </simpleType>

  <attributeGroup name="simpleType">
    <attribute name="type" use="required">
      <simpleType>
        <restriction base="token">
          <enumeration value="simple"/>
        </restriction>
      </simpleType>
    </attribute>
  </attributeGroup>

  <attributeGroup name="extendedType">
    <attribute name="type" use="required">
      <simpleType>
        <restriction base="token">
          <enumeration value="extended"/>
        </restriction>
      </simpleType>
    </attribute>
  </attributeGroup>

  <attributeGroup name="locatorType">
    <attribute name="type" use="required">
      <simpleType>
        <restriction base="token">
          <enumeration value="locator"/>
        </restriction>
      </simpleType>
    </attribute>
  </attributeGroup>

  <attributeGroup name="arcType">
    <attribute name="type" use="required">
      <simpleType>
        <restriction base="token">
          <enumeration value="arc"/>
        </restriction>
      </simpleType>
    </attribute>
  </attributeGroup>

  <attributeGroup name="resourceType">
    <attribute name="type" use="required">
      <simpleType>
        <restriction base="token">
          <enumeration value="resource"/>
        </restriction>
      </simpleType>
    </attribute>
  </attributeGroup>

  <attributeGroup name="titleType">
    <attribute name="type" use="required">
      <simpleType>
        <restriction base="token">
          <enumeration value="title"/>
        </restriction>
      </simpleType>
    </attribute>
  </attributeGroup>

  <simpleType name="showEnum">
    <annotation>
      <documentation>
      Enumeration of values for the show attribute
      </documentation>
    </annotation>
    <restriction base="string">
      <enumeration value="new"/>
      <enumeration value="replace"/>
      <enumeration value="embed"/>
      <enumeration value="other"/>
      <enumeration value="none"/>
    </restriction>
  </simpleType>

  <simpleType name="actuateEnum">
    <annotation>
      <documentation>
      Enumeration of values for the actuate attribute
      </documentation>
    </annotation>
    <restriction base="string">
      <enumeration value="onLoad"/>
      <enumeration value="onRequest"/>
      <enumeration value="other"/>
      <enumeration value="none"/>
    </restriction>
  </simpleType>
  
  <attribute name="type" type="xlink:typeEnum"/>
  <attribute name="role" type="xlink:nonEmptyURI"/>
  <attribute name="arcrole" type="xlink:nonEmptyURI"/>
  <attribute name="title" type="string"/>
  <attribute name="show" type="xlink:showEnum"/>
  <attribute name="actuate" type="xlink:actuateEnum"/>
  <attribute name="label" type="NCName"/>
  <attribute name="from" type="NCName"/>
  <attribute name="to" type="NCName"/>
  <attribute name="href" type="anyURI"/>
  
</schema>
